6 Drinks that will help shrink your belly fat immediately

2. Watermelon Smoothie

As long as they’re made without sugary mixers like sherbet, smoothies are a guilt-free way to hydrate—and watermelon is a terrific, low-cal smoothie base. Not only is it a natural hydrator because of its water content, watermelon is also loaded with nutrients, including cancer-fighting lycopene, as well as an amino acid known as arginine. A study in the Journal of Nutrition found that arginine can decrease body fat and increase lean muscle mass, so whip up this 56-calorie metabolism booster and sip away!